Ignition apparatus for internal-combustion engines.



. I.- J. DAILY. IGNITION APPARATUS FOR INTERNAL COMBUSTION ENGINES APPLIGATIONIILED JAN.21,.1913.

. Q 1,125,971. Patented Jan.26,1l 15.

2 SHEETS-433E211 1.

WITNESSES: 5i INVENTOR.

WG IRHVIN. JDHILYL'YL ATTORNEY.

I. J. DAILY. IGNITION APPARATUS FOR INTERNAL COMBUSTION ENGINES. APPLICATION FILED JAN .21,1913.

1,125,971; F Patented Jan. 26, 1915 2 SHEETSSHEET 2. Fig.

WITNESSES.-

0m. I 8W A TTORNEK.

[NVEN T OR.

@FFICE,

IRVIN J. DAILY, OF Ilu'DIANAPOLIS, INDIAN ASSIGNOR TO H'ENRICKS NOVELTY COMPANY, OF INDIANAPOLIS. INDIANA, A CORPORATION.

IGNITION APPARATUS FOR INTERNAL-COMBUSTION ENGINES.

Application filed January 21.

To II/fl w/mm if; may concern lie it known that I, IRVIN (l. DAILY, a citizen of the United States, and a resident of lmlianapolis, county of Marion, and State of Indiana, have invented a certain new and useful Ignition Appa atus for Internal- (ombustion Engines; and I do hereby declare that the following is a. full, clear, and exact description thereof, reference being bad to the accompanying drawings. in which like letters refer to like parts.

The object of this invention is to provide a simplified and durable device for produc ing the initial spark by magneto or generator to start internal combustion engines, and to dispense with the necessity of using batteries in starting such engines. it farnishes the required hot spark to ignite the charge in the cylinder atthe exact time desired and for which it is set, entirely without regard to the speed with which the wl'ieel is turned over-to produce the compression and it is so constructed that it produces the spark equally well whether driven ,forward or backward.

In many engines it is diiiicult to turn the wheel entirely over, and the wheel is turned backward. but before reaching full comprea sion, the charge is exploded by use of a hatter ll' he-n the engines are started in this manner an ordinary magneto cannot be used to produce the spark and it always necessary to have a battery; hut with my invention the magneto, either make and break or jump spark, will furnish the spark at whatever point of compression desired, no hatter how slowlv the wheel is turned back, and the use of the battery for starting i'nay be en iirely dispensed with.

in order to get the best results and the full force of the explosion, the engines are so constructed that, while running, the explosion of the charge takes place below or before the shaft reaches the dead center, and

I momentum, of the fly whccl always carries the shaft on over: but when starting the on ine it is diilicult sometimes for the operator to give the fly wheel sullicieui. momentum to carry the shaft over when the initial explt sion takes place, and if it does not ha re the required speed the wheel kicks hack, and

Specification of Letters Patent.

1913. Serial No. 743,245.

often injures the operator. With my invention; however, the initial spark on engines so constructed is held back until after the shaft is above dead center, so that when the explosion takes place the wheel is bound to move forward, and it is absolutely impossible to have any kick backward, while after the engine is started the explosions all take place below dead center at the point intended in the construction of the engine. If, however, the initial explosion does not furnish enough speed to the wh el so that the magneto will furnish a hot enough spark to fire the engine when the second. explosion should take place, my invention will continue to furnish sparks for as many additional explosions as may be necessary. This feature of my invention is especially useful where compressed air is used to start the engine. Sometimes the compressed air turns the wheel over so slowly that the magneto as ordinarily tached will not furnish any spark at all or at least not hot enough to explode suiiieiently the charge, while with my invention he necessary hot spark is furnished at the point desired, no matter how slowly the wheel is moving, and it will continue to furnish the e sparks just as long as the operator desires.

The chief feature of my invention is in the spring construction. The spring used for the purpose of-giving the necessary quick impulse to the armature to produce the spark, is not attached at either end, and is so arranged that the proper tension upon it can be produced when the driving wheel is moved in either direction, either forward or backward: and when the tension is released, it will always turn the armature forward in the direction it is intended to run when the engine is in full operation. This feature enables the magneto to be easily attached and operated, because it does not have to be set so that the driving wheel is turned in one particular direction.

Another and exceedingly important feaiul'c of the inrention is that the injurious shock which in kindred devices is occasioned by stopping the recoil of the spring, is practically eliminated by this force coming against the other end of the spring, which so cushions the shock that no injury is done to the mechanism. In this device the armature is spring actuated, and also spring cushioned, and, in fact, the same spring per- -for1ns both of these functions; so that the mechanism is not subject to the shock of the sudden stop of the armature, which necessarily occurs in all of the other kindred devices.

The nature of the invention will be understood from the accompanying drawings and the following description and claims.

In the drawings, Figure l'is a side elevation of an internal combustion engine equipped with said invention. Fig. 2 is a side elevation of the magneto and associated parts' on an enlarged scale. Fig. 3 is a transverse section on the line 3-3 of Fig. 2, showing the parts in one position. Fig. 4 is a similar view showing the parts in another position. Fig. 5 is a perspective view of "a part of the casing and the spring and stops therein. Fig. 6 is a plan view of what is shown in Fig. 5 with the spring actuated to the dotted line position. Fig. 7 is a longitudinal central section of the right-hand portion of what is shown in Fig. 2.

There is shown herein an internal combustion engine having cylinders 10 and crank case 11 with a bracket 12 on the crank case which carries the magneto 13 and crank shaft 14:. The m: gneto is a low tension magneto of ordinary type with an inductor shaft 15, magnets l(.'- and an end plate 17 of the main casing of the magneto. The inductor shaft of the magneto may be driven by any suitable means. The-means shown is through a sprocket wheel 20 which is loosely mounted on the inductor shaft 15 and has extending outwardlyfrom it a pin 21 which projects between the ends 22 and 23 of a spring 24 coiled about the hub 25 of a cylinder or casing 26 and which is secured on the shaft 15 by a set screw 2-7. The spring is coiled loosely about the hub 25 and its two ends and 23 he on opposite sides of a pin 28 which extends inwardly from the end wall of the casing 26 and is rigid. In this manner the inductor shaft 15 is yieldingly actuated and under resistance to the rotation of the shaft 15,'the spring will he changed from the full line position shown in Fig. 5 to the dotted line position shown in Fig. 6, the pin 28 holding the end 23 of the spring stationary and the pin 21 on the sprocket wheel 20 moving the end 22 of the spring and thus tending to coil more tightly the spring around the sleeve 25. The spring is very loosely coiled around the sleeve as shown in Fig. 6, and it is held in place by a roller 29 loosely mounted on a pin 30 in the case 26. This not only makes a yielding drive, but also pushes the device against the hack stroke of the shaft 1.5.

, The shaft 15 has secured on it a stop disk 31 which has semi-circular cam projections 82 on one side and a stop block 33 on the other side in position to engage the hooked end of an arm or pawl 34: spring mounted on a pin 35 extending outwardly from the up 'per portion. of the end plate 17. The hooked end of the pawl 23% has lateral play, as shown in Fig. 7. This play or movement is at tained by the pawl 34 having a large opening through it for the pin and a spring 36, said spring lying within said opening and around the pin 35. The pawl 25% has a laterally extending iiange 1-31 on its 'outer side in position. at times to be engaged by a cam 40 which. is secured to the hub of the sprocket wheel 20. The pawl. 35 has a finger piece -fl-1 whereby it'is laterally adjusted.

The operation of the mechanism is as follows: Assuming the engine to be at a standstill, the operator takes hold-o1 the finger piece 41 and throws the lower end of the pawl 34 to the right, as shown in Figs. 2 and 7, that is, of? of the flange 117 upon which it normally rides, in position upon the stop disk 31 and then the flange 135 overlaps the cam 10. The engine is cranked or the crank shaft given a starting movement which immediately uctuates the sprocket wheel 20 of the magneto. That causes the cam l0 to revolve in the direction indicated by the arrow in Fig. 3. During this movement. however. the inductor shaft 14 is resisting rotation because the hooked end of the pawl is in engagement with the shoulder or stop 33 of the stop disk 31 secured on the inductor shaft and it holds the inductor shaft from rotation until the cam 40 turns far enough to engage the pawl, as shown in Fig. 4-. and dislodge it. During that movement. the tension of the spring 2-1 has been increased all of the time and as soon as the pawl disengages the stop 33. the spring will give a sud den and Vigorous rotary impulse to the inductor shaft of the magneto which will cause a spark in the spark plug of the engine and ignite the charge at once. The above results whether the sprocket wheel 20 he actuated slowly or fast. It is immaterial how it is actuated for it can be started by hand with a slow movement and yet the spring would give a sudden impulse to the inductor shaft sutlicieut to cause a strong spark and without the addition of any hattery or other auxiliary means. it enables the battery to be dispensed with. tion of the cam dislodging the pawl. throws it automatically out of the way of the cam 40 over onto the shoulder 11'? and henceforth the pawl. 34 does notinterfere with the operation of the magneto. WV hen it is desired again to start the engine. the pawl 34 is dislodged by hand or otherwise from its position on the shoulder 117 and thrown This ad over upon the disk 31. It is immaterial in what direction the sprocket wheel 20 rotates for if it goes in the opposite direction from that indicated in Fig. 3, the other shoulder 32 will engage the pawl Si and prevent further rotary movement of the inductor shaft until he spring has been put under considcrahle tension. when again the pawl will he dislodged by the cam 40 and the will give the necessary impulse to the inductor shaft. I

The steps 22 and on the disk 31 prevent hack action or rotation of the inductor shaft. as the are arranged so that the hook on the pawl :nwilleatch one (it those stops regardless of the direction in which the in ductor shaft starts. I

The springfZ: and the pin 28 on the armature 2G and the pin 21. on the gear 20 are arranged so that the return or siaringactuated movement of the armature is not suddenly stopped, but is graduall; stoppedbv the same spring 24-, said spr ng thus serving 7 as a cushioning means for stopping the armature and absorbing or preventing the shock which would result if the armature was suddenly stopped.

I claimas my lnventionz 1. An electric generator provided with an inductor shaitt, a spring for causing its rotation and which is adapted to yield in both directions so as to yieldingly stop as well as actuate said shaft, and means for temporarily holding and then releasing said shaft.

An electric generator provided with an inductor shaft, a spring for causing its rotation, and a pair of stops for limiting the action of the spring in both directions.

3. An electric generator including an inductor shaft, a drive wheel loosely mounted on said shaft with a pin extending laterally therefrom, a casing secured on said shaft with a pin extending therefrom toward said drive wheel, a coil spring surrounding saidgshaft with both ends thereof projecting radially outward and on opposite sides of both of said pins, means for tempo raril r holding the inductor shaft against rotaryinovenient, and means for releasing said holding means after the driving mecha I nism has put said spring under tension.

4. An electric generator including an in ductor shat, a stop disk secured thereon with a'plurality of stops, a pawl in position toengage one of said stops whether the vshait be turned in one direction or the other,

means loose mountedon the shaft for driving the same, a spring through which power is transmitted from said driving means to the shaft, and means connected with the driuing means for releasing the pawl.

". An electric generator including an inductor shaft, a main casing, a pin in the l easing, ,iwl mounted loosely thereon so disk on said shaft in position to he eng ed a; by the pawl when moved into operative .position, means loosely mounted on the shaft for driving the same, a spring through which power is transmitted from said driving means to the shaft, and means connected with the driving means for releasing the pawl pawl being arranged so that said earn will throw it out of operative position.

(9. An electric generator including an inductorshaft, a main casing, a pin in the casing. a pawl mounted looselv thereon so that the tree end may have lateral movement, a lateral flange on said pawl, a spring for i wtuating said pawl, an annular shoul dcr on the casingfor holding the pawl out of operative position. a stop disk on said shaft in position to he engaged by the pawl, a cam adapted to engage the lateral flange on the pawl, a stop disk on said sha t in position to he engaged by the pawl when moved into operative position. means loosely mounted on the shaft for driving the same, a spring through which power is transmitted from said driving means to the shaft. and means connected with the driving means for releasing the pawl, saic. pawl being arranged so that said cam will throw it out of operative position. 1

T. An electric generator including an in durtor shaft, driving means loosely mounted on said shaft, means attached to said shaft which. by pressureagainst the same, will cause the said shaft to rotate. a spring coiled around said slia'l t with projecting ends, a pin extending from said (:lriving means. a

pin extending from the 302115 attached to said shait. liOlZll of siad pins projecting hevtween the ends oi said spring without the ends of said springs heing attachco to either at said means passing between the ends ol said spring and so constructed that when the pin extending from said driving means is pressed against one end of said spring, the other end of the spring will engage the other pin without regard to the direction said driving means will propel the inductor shaft whether said driving means rotated either forward or bark ward. and means for temporarily holding rid inductor shaft from rcvolving with said driving means and thus causing tension upon said spring that will. hv the recoil tllPYQO'l when said holding means is released. cause said inductor shaft to revolve at a much more rapid rate than the driving means and will cause the pin from the means attached to said inductor shat't t:- strike the end of the spring against which the revolving means is pressing and at practically the same time strike the pin extending from said driving means and thereby the momentum of said inductor shaft be checked without shock by the cushioned effect of said spring until theincreased speed of said inductor shaft is reduced to the speed of the driving means.

8. An electric generator including an nductor shaft, a driving means loosely mounted on said shaft, a pin extending from said driving means, a casing attached to said shaft, a pin extending from said casing, and a spring coiled around said shaft and so constructed at each end that the pin extending from the driving means and also the pin extending from the casing will both project between the ends of said spring in such a manner that without the ends of said spring or either of them being attached, the pin extending from the driving means, when said driving mains is rotated upon said shaft, will press against one. end of said spring and when the driving means is-rotated in the other direction, will press against the other end of said spring, and when said pin attached to said driving means is pressed against one end of the spring, the pin attached to said casing will always press against the other end of the spring than the one against which the driving means is pressing and will :ause the inductor shaft to rotate with the same speed as the driving means, and when the inductor shaft is held from rotating with the driving means, a tension is placed upon said spring and when that tension is released. the recoil. of the spring wil. cause the inductor shaft to rapidly rotate until the pin attached to said casing strikes the other end of said sprin which by reason of notbeing attached to said driving'mea'ns, and the other end at the same time striking against said driving means. will give a cushioned check to the speed of said inductor shaft down to the speed of said driving means.

0. An electric generator including an inductor shaft. a driving means loosely mounted on said shaft, a pin extending from said driving means. a casing attached t0 said shaft. a pin extending from said casing, and a spring coiled around said shaft and so constructed thatthe pin extending from the driving means and the pin extending from the casing will both project between the ends of said spring. so that when said driving means'is revolved, the pin extending from the driving means will press against one end of the spring. and if the driving means is turueo to the opposite direction, the. pin extending from it will press against the other end of said spring, and whenever the driving pin attached to said driving means presses against one end of said Spring, the pin extending from the easing Wlll press mea re against the other end of said-spring, and thereby the inductor sh aft will be turned by the driving means, and when said inductor shaft is held from rotating, a tension will be placed upon said spring. and when said tension is released, the recoil of said spring will cause said inductor shaft to revolve at a rapid speed, until the pin attached to said casing strikes the other end of the spring, which serves as a. yielding or cushioned stop, to stop or check up the speed of said inductor shaft to correspond with the speed of said driving means.

'10. An electric generator including an inductor shaft. :1 driving means loosely mounted on said shaft. a pin extending from said driving means. a casing attached to said shaft, a pin extending from said casing, a spring coiled around said shaft and so constructed at each end that said pin extending from the side of said driving means and also said pin extending from the casing will both projectbetwecn the ends of said spring. so that the pin attached to the drivingmeans. when said driving means-is turned around the shaft. will press against one end of said spring. and if the driving means is turned in the opposite direction, the pin attached to the driving means will pressagainst the other end of the spring, and whenever the pin attached to said driving means presses against one end of said spring, the pin extending from the casing will press against the other end of the spring, and when said inductor shaft is held from rotating, the. turning of the driving means will put a tension upon said spring, means for holding said inductor shaft while the driving means is putting tension upon said spring. means for releasing said holding means when the desired tension is acquired. means whereby the momentum given to said inductor shaft by said spring. when released. is stopped. or checked up to the. speed of the driving means, by having the pin attached to said casing strike against the other end of said sprin 11. An electric generator provided with an inductor shaft, a spring for causing its rotation. and means for limiting the rotation of said shaft in either direction. 12. An electric generator provided with. an inductor shaft, :1 spring for causing its rotation. means for temporarily holding saidv shaft when rotated in either direction, and means for releasing said holding means.

'13. An electric generator provided with an inductor shaft. :1 spring through which power is transmitted to rotate said shaft, and means loosely engaged by said spring when moved in either direction for yieldingly actuating and stopping said shaft, as desired.

14. An electric generator prdvided with an inductor shaft, 2 spring throilgh which power is transmitted to rotate said shaft and arranged to cause the rotation in either direction, and means sngaged by but not ajla spring for actuating asid 5 cached to said shaft and stopping the same, as desired.

In witness. whereof, I have hereunia afixed my signature in the pregame of the witne%es herein nameni.

KEVIN J. DAILY. Witnsses:

' J H. WELLS,

G. M. MOLAUGHIJN. 

